US4467073A - Transparent anti-fog coating compositions - Google Patents
Transparent anti-fog coating compositions Download PDFInfo
- Publication number
- US4467073A US4467073A US06/435,461 US43546182A US4467073A US 4467073 A US4467073 A US 4467073A US 43546182 A US43546182 A US 43546182A US 4467073 A US4467073 A US 4467073A
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- United States
- Prior art keywords
- polymer
- surfactant
- prepolymer
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- reaction product
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6283—Polymers of nitrogen containing compounds having carbon-to-carbon double bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
- C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
Definitions
- This invention is in the field of coating compositions.
- hydrophilic polymer coatings to reduce moisture fogging.
- the most effective of these coatings use soluble polymers which have a short life since they wash off.
- pure surfactant solutions which function by depositing a soap film causing water droplets to spread. Such films also have a short life since they wash off.
- hydrophilic polymer anti-fog coatings to which silicone based surfactants have been added since the surfactant still exists in a soluble form (see Canadian Pat. No. 1,012,283).
- U.S. Pat. No. 4,119,094, incorporated herein by reference discloses slippery coatings of polyvinylpyrrolidone-polyurethane interpolymers which do not have good anti-fog properties.
- An anti-fog liquid coating composition comprises: a polymer which is polyvinylpyrrolidone, polydimethylacrylamide or a polyvinylprrolidone copolymer with a polymerizable alpha olefin free of functional groups reactive with isocyanates; a polyisocyanate prepolymer; a surfactant which will chemically bond to a reaction product of the polymer and prepolymer, and an organic solvent to form a solution of the foregoing ingredients.
- the invention includes a substrate having an anti-fog transparent coating comprising the reaction product of polyvinylpyrrolidone, a polyvinylpyrrolidone copolymer with a polymerizable alpha olefin free of functional groups reactive with isocyanates or polydimethylacrylamide with a polyisocyanate prepolymer, said reaction product being chemically bound to a surfactant.
- the surfactant is chemically combined with the hydrophilic polymer/isocyanate prepolymer composition and is not subject to extraction in any significant amount while still confering improved fog resistance to the coated substrate.
- the anti-fog liquid coating composition of the invention comprises a polymer which is polyvinylpyrrolidone, a hydrophilic polyvinylpyrrolidone copolymer with a polymerizable alpha olefin free of functional groups reactive with isocyanates or polydimethylamide, a polyisocyanate prepolymer, a surfactant which chemically bonds to a reaction product of the polymer and prepolymer by complexing or reacting therewith, and an organic solvent to form a solution of the foregoing ingredients.
- polyvinylpyrrolidone copolymers are poly (vinylpyrrolidone-co-vinyl acetate), poly (vinylpyrrolidone-co-ethylacrylate) and poly (vinyl-pyrrolidone-co-vinyl chloride).
- the isocyanate prepolymer will be an isocyanate partially reacted with a polyol. It is preferred to use a prepolymer derived from an aliphatic isocyanate such as isophorone diisocyanate, 2,2,5 trimethylhexamethylene diisocyanate and alkyl substituted derivatives thereof, or 4,4' methylene, bis-(cyclohexyl diisocyanate). Other prepolymers of isocyanates and polyols are satisfactory such as the adduct of trimethylolpropane and diphenylmethane diisocyanate or tolylene diisocyanate. For further examples of isocyanate prepolymers reference may be had to "Encyclopedia of Polymer Science and Technology", H. F. Mark, N. C. Gaylord and N. M. Bikales (Eds.) (1969).
- the ratio of weight of the polymer to the weight of isocyanate prepolymer preferably will be in the range from about 10 to 1 to about 3 to 1 based on the concentration of reactive isocyanate groups alone, i.e., the ratio of parts by weight of polymer to parts by weight of isocyante in the prepolymer irrespective of the other components of the isocyanate prepolymer.
- isocyanate prepolymers useful in the coatings art contain from 2 to about 30 percent isocyanate reactivity.
- the surfactant will be present in an amount by weight of from about 0.1% to about 40%, preferable from about 5% to about 25%, of the combined weights of the polymer and isocyanate prepolymer. It is preferred to have a anionic surfactant such as a sulfonate, sulfate, phosphate or carboxlyate. Exemplary are dioctylsodiumsulfosuccinate, sodium lauryl sulfate, alkylphenoxypoly (ethylenoxy) ethyl sulfate, sodium naphthalene sulfonate and potassium perfluoroalkyl sulfonates.
- a anionic surfactant such as a sulfonate, sulfate, phosphate or carboxlyate. Exemplary are dioctylsodiumsulfosuccinate, sodium lauryl sulfate, alkylphenoxypoly (ethylenoxy)
- the surfactant may be a nonionic surfactant having isocyanate-reactive groups such as polyethoxylated nonylphenols, perfluoro (polyethyleneoxy) ethanol, ethylene oxide/propylene oxide block copolymers and poly propoxylated/ethoxylated ethylenediamine surfactants, plus the partially sulfated, phosphated or carboxylated derivatives of those nonionic surfactants with functionality >1.
- Both nonionic and anionic surfactants may be used in the same coating composition to good effect.
- complex formation refers to the reversible or irreversible association of two substances usually altering the physical properties of both but without affecting their chemical makeup, whereas a chemical reaction involves a bond formation with concurrent changes in structure and/or composition.
- chemically bonding as used herein includes both reacting and complexing.
- the above mentioned solid ingredients will be dissolved in an organic solvent which is substantially non-reactive with the said solid ingredients, the amount of which may vary within wide limits but preferably will be in an amount of from about 99% to about 80% of the weight of the above mentioned ingredients in the composition.
- solvents are ethyl lactate, diacetone alcohol, tertiary butyl alcohol, methylene chloride, trichloroethane and N-methylpyrrolidone. So long as miscible solvents are used, more than one solvent may be employed. Thus, for example, one solvent may be employed for a polymer and a different solvent for the isocyanate prepolymer so long as the solvents are miscible. Where the term solvent is used generally here and in the claims it is intended to include one or more solvents.
- THe surfactant will form a complex in the case of an anionic surfactant by becoming bound to the polyvinylpyrrolidone, polyvinylpyrrolidone copolymer or polydimethylacrylamide portion of the reaction product. This complex forming behavior was studied and reported by S. Saito, Kolloid Zeitschrift, 154, 19, (1957). In the case of a nonionic surfactant, the surfactant reacts with the isocyanate moieties of the isocyanate prepolymer.
- additives such as leveling aids, viscosity modifiers, catalyts, ultraviolet stabilizers and biocides as is known and practiced in the coatings art.
- composition is readily prepared by mixing the solid ingredients in any order in the solvent at room temperature.
- the thus prepared composition can readily be applied to a substrate by dipping, painting, spraying or the like.
- the solvent is evaporated at room temperature by air drying. More rapid evaporation can be achieved, if desired, by placing the coated substrate in an oven at a temperature of from about 50° to about 100° C. By the time the solvent is evaporated the reaction product and complex will be formed in the resultant coating composition.
- Any substrate on which the prior art has used antifog coating composition may be employed with this invention.
- Typical are rubber, glass and plastics such as polyvinylchloride, polyurethanes, polyesters, polycarbonates, acrylic resins and polystyrenes.
- Typical uses are on eyeglasses and in solar hot water units.
- Polyvinylpyrrolidone, PVP-K90, 2.5 g was dissolved in 100 ml of a mixture of 75% diacetone alcohol and 25% cyclohexane, followed by 1.0 g dioctyl sodium sulfosuccinate surfactant and 5.0 g Tycel 7351 isocyanate prepolymer (Hughson Chemicals, Lord Corporation). Coatings applied with this composition and cured 24 hours at 72° F. were transparent, colorless, hard and scratch resistant and did not fog when cooled to 32° F. and then held over a beaker of boiling water. Fog resistance is not diminished after 20 cycles of cooling, exposing to steam and drying. The fog resistance is essentially intact after 3 days soaking in water. The coating exhibits excellent adhesion to polycarbonate, polyester, polymethylmethacrylate and cellulose acetate plastics.
- PVP-K90 2.5 g was dissolved in 100 ml of a mixture of 50% ethyl lactate and 50% methyl ethyl Ketone, followed by 1.5 g alkylphenoxypolyethyleneoxy sodium sulfate surfactant and 2.5 g Spenlite P25-60cx isocyanate prepolymer (Spencer-Kellogg Corp.). Coatings applied from this compositon and cured 72 hours at 72° F. are greatly superior in fog resistance to uncoated glass or plastics. Coatings are colorless, transparent and essentially equivalent with respect to the other properties described in Example I.
- Tycel 7351 isocyanate prepolymer (Hughson Chemicals), 7.5 g, was dissolved in 100 ml of a mixture of 75% diacetone alcohol and 25% cyclohexane, followed by 1.5 g sodium dioctyl sulfosuccinate. Fully cured coatings from this composition functioned well as anti-fog coatings--but effectiveness was greatly reduced or lost after soaking in water. The utility of such coatings is therefore limited in the absence of a complex forming hydrophilic polymer.
- Polyvinylpyrrolidone 2.5 g was dissolved in 100 ml of a mixture of 75% tertbutyl alcohol and 25% xylene, followed by 5.0 g of Tycel 7351 isocyanate prepolymer (Hughson Chemicals) and 1.0 g dioctyl sodium sulfosuccinate.
- Tycel 7351 isocyanate prepolymer Hughson Chemicals
- dioctyl sodium sulfosuccinate 1.0 g dioctyl sodium sulfosuccinate.
- a vinyl pyrrolidone/vinyl acetate 70/30 copolymer is substituted for the polyvinylpyrrolidone in Example I.
- the coating preparation and properties are essentially equivalent to those described in Example I.
- Example I Polydimethylacrylamide was substituted for the polyvinylpyrrolidone in Example I.
- the coating preparation and properties are essentially equivalent to those described in Example I.
- Example I To the solution in Example I was added 0.05 g (1% based on isocyanate prepolymer) dibutyltin dilaurate catalyst. Cure is complete after 10 mins. at 60° C. with this additive. Other coating properties are identical to those described in Example I.
- the polyvinylpyrrolidone is omitted from the composition in Example VIII.
- the resultant coating functions poorly as an anti-fog coating and even much higher Triton X-100 concentrations fail to impart satisfactory fog-resisting qualities.
- Polyvinylpyrrolidone (K90) 1.0 g was dissolved in a mixture of 85 g diacetone alcohol, 40 g cyclohexane and 10 g n-butyl acetate, followed by 2.0 g hexamethylene diisocyanate biuret (Desmodur N-100 made by Mobay Corp.).
- the coatings resulting from this solution, after curing 72 hours at R.T., are essentially identical in properties to those described in Example I.
- a dibutyltin dilaurate catalyst is added to the composition in Example X.
- the resulting coatings cure (0.5% on polymer solids) within 20 mins. at 60° C.
- Example X The composition of Example X was prepared without the polyvinylpyrrolidone.
- the resultant coatings are essentially equivalent in physical properties and function well as anti-fogs. However, utility is limited as much of the anti-fog property is lost after soaking in water.
- Polyvinylpyrrolidone (K90) 1.0 g is dissolved in a mixture of 85 g diacetone alcohol, 40 g cyclohexane and 10 g n-butyl acetate, followed by 4.0 g hexamethylene diisocyanate biuret (Desmodur N-100 made by Mobay Corp.), 4.0 g Acryloid polyol (Made by Rohm and Haas) AU608 and 3.0 g perfluorinated (polyethyleneoxy) ethanol (Fluorad FC170C made by 3M).
- the wetting agent is bound in this coating through reaction between the surfactant and groups (--OH) and isocyanates.
- the anti-fog properties of this coating are particularly inert to long term immersion in water.
- a polyvinyl pyrrolidone-vinyl acetate copolymer is substituted for the polyvinylpyrrolidone in Example X with essentially equivalent results.
- a dimethylacrylamide polymer is substituted for the polyvinylpyrrolidone in Example X with essentially equivalent results.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- Polyurethanes Or Polyureas (AREA)
- Paints Or Removers (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/435,461 US4467073A (en) | 1982-10-20 | 1982-10-20 | Transparent anti-fog coating compositions |
PCT/US1984/001159 WO1986000916A1 (en) | 1982-10-20 | 1984-07-20 | Transparent anti-fog coating compositions |
DE8484903109T DE3476077D1 (en) | 1982-10-20 | 1984-07-20 | Transparent anti-fog coating compositions |
EP84903109A EP0188419B1 (de) | 1982-10-20 | 1984-07-20 | Durchsichtige antibeschlag-zusammensetzung |
JP59503051A JPS61502762A (ja) | 1982-10-20 | 1984-07-20 | 曇り防止透明被覆組成物 |
AT84903109T ATE39942T1 (de) | 1982-10-20 | 1984-07-20 | Durchsichtige antibeschlag-zusammensetzung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/435,461 US4467073A (en) | 1982-10-20 | 1982-10-20 | Transparent anti-fog coating compositions |
PCT/US1984/001159 WO1986000916A1 (en) | 1982-10-20 | 1984-07-20 | Transparent anti-fog coating compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
US4467073A true US4467073A (en) | 1984-08-21 |
Family
ID=26770360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/435,461 Expired - Lifetime US4467073A (en) | 1982-10-20 | 1982-10-20 | Transparent anti-fog coating compositions |
Country Status (6)
Country | Link |
---|---|
US (1) | US4467073A (de) |
EP (1) | EP0188419B1 (de) |
JP (1) | JPS61502762A (de) |
AT (1) | ATE39942T1 (de) |
DE (1) | DE3476077D1 (de) |
WO (1) | WO1986000916A1 (de) |
Cited By (69)
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US4551484A (en) * | 1983-07-22 | 1985-11-05 | Saint-Gobain Vitrage | Transparent, antifogging coating comprised of a plastic material containing a surface active agent |
WO1986000916A1 (en) * | 1982-10-20 | 1986-02-13 | Hydromer, Inc. | Transparent anti-fog coating compositions |
US4642267A (en) * | 1985-05-06 | 1987-02-10 | Hydromer, Inc. | Hydrophilic polymer blend |
US4708856A (en) * | 1986-03-03 | 1987-11-24 | Norton Company | Liquid-gas absorption process |
EP0425436A2 (de) * | 1989-10-25 | 1991-05-02 | Ciba-Geigy Ag | Reaktionsfähige Silicium und/oder Fluor enthaltende hydrophile Prepolymere und daraus hergestellte Polymere |
US5074847A (en) * | 1989-05-01 | 1991-12-24 | Century Plastics, Inc. | Needle shield with transparency maintaining coating |
EP0483941A2 (de) * | 1990-11-01 | 1992-05-06 | C.R. Bard, Inc. | Reibungsfreie Hydrogel-Überzüge |
EP0498005A1 (de) * | 1991-02-06 | 1992-08-12 | Melitta Haushaltsprodukte GmbH & Co. Kommanditgesellschaft | Antibeschlagmittel |
US5162475A (en) * | 1988-06-20 | 1992-11-10 | Ppg Industries, Inc. | Polymerizable surfactant |
US5244960A (en) * | 1990-04-02 | 1993-09-14 | Ppg Industries, Inc. | Thermosetting waterborne coating compositions prepared from aqueous emulsion polymers |
US5262475A (en) * | 1992-05-12 | 1993-11-16 | Film Specialties, Inc. | Hydrophilic compositions which are fog-resistant |
US5296627A (en) * | 1988-06-20 | 1994-03-22 | Ppg Industries, Inc. | Ethylenically unsaturated poly(alkyleneoxy) surfactants |
US5324573A (en) * | 1992-12-18 | 1994-06-28 | Rexham Industries Corp. | Antifogging plastic lens material |
US5487920A (en) * | 1994-04-19 | 1996-01-30 | The Boc Group, Inc. | Process for plasma-enhanced chemical vapor deposition of anti-fog and anti-scratch coatings onto various substrates |
US5585186A (en) * | 1994-12-12 | 1996-12-17 | Minnesota Mining And Manufacturing Company | Coating composition having anti-reflective, and anti-fogging properties |
WO1998003575A1 (en) * | 1996-07-22 | 1998-01-29 | Film Specialties, Inc. | Scratch-resistant anti-fog coating composition incorporating isocyanate-reactive surfactants |
US5804612A (en) * | 1995-06-08 | 1998-09-08 | Arkwright, Incorporated | Transparent anti-fog coating |
US5846650A (en) * | 1996-05-10 | 1998-12-08 | Minnesota Mining And Manufacturing Company | Anti-reflective, abrasion resistant, anti-fogging coated articles and methods |
US5873931A (en) * | 1992-10-06 | 1999-02-23 | Minnesota Mining And Manufacturing Company | Coating composition having anti-reflective and anti-fogging properties |
US6040053A (en) * | 1996-07-19 | 2000-03-21 | Minnesota Mining And Manufacturing Company | Coating composition having anti-reflective and anti-fogging properties |
US6065654A (en) * | 1998-03-13 | 2000-05-23 | Rw Ski Products, Inc. | Footwear insertion apparatus and method |
US6095986A (en) * | 1998-07-28 | 2000-08-01 | Square One Technology, Inc. | Disposable anti-fog airway adapter |
US6221467B1 (en) | 1997-06-03 | 2001-04-24 | Scimed Life Systems, Inc. | Coating gradient for lubricious coatings on balloon catheters |
US6436377B1 (en) | 2001-02-26 | 2002-08-20 | Societe L'oreal S.A. | Enhanced SPF sunscreen (sprayable) formulations comprising interpolymers of PVP/dimethiconylacrylate/polycarbamyl/polyglycol ester |
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US20030205059A1 (en) * | 2002-05-02 | 2003-11-06 | Hussmann Corporation | Merchandisers having anti-fog coatings and methods for making the same |
US6645483B2 (en) * | 1998-10-07 | 2003-11-11 | Sherwood Services Ag | Lubricious coating |
US20040127598A1 (en) * | 1998-10-07 | 2004-07-01 | Mcghee Diane | Lubricious coating |
US20050064101A1 (en) * | 1999-05-25 | 2005-03-24 | Saint-Gobain Vitrage | Transparent glazing and use thereof in a chilling chamber door comprising in particular a glazing under vacuum |
US20050163924A1 (en) * | 2002-09-17 | 2005-07-28 | 3M Innovative Properties Company | Porous surfactant mediated metal oxide films |
US20050202178A1 (en) * | 2002-05-02 | 2005-09-15 | Hussmann Corporation | Merchandisers having anti-fog coatings and methods for making the same |
US20050203201A1 (en) * | 2002-07-24 | 2005-09-15 | Steube Gregory A. | Medical device lubricant comprising radiation curable silicon material |
US7008979B2 (en) | 2002-04-30 | 2006-03-07 | Hydromer, Inc. | Coating composition for multiple hydrophilic applications |
WO2006034068A2 (en) | 2004-09-20 | 2006-03-30 | Afg Industries, Inc. | Anti-fog refrigeration door and method of making the same |
US20060078718A1 (en) * | 2004-10-12 | 2006-04-13 | Matthias Konrad | Polyester film with hydrophilic coating, process for its production and its use |
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US20080063857A1 (en) * | 2006-05-31 | 2008-03-13 | Matthias Konrad | Sealable, biaxially oriented polyester film with hydrophilic coating |
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GB9217625D0 (en) * | 1992-08-19 | 1992-09-30 | Smith & Nephew Res | Polymer materials |
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JP7160638B2 (ja) * | 2018-11-09 | 2022-10-25 | 日本カーバイド工業株式会社 | 樹脂組成物及び防曇フィルム |
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Also Published As
Publication number | Publication date |
---|---|
EP0188419A1 (de) | 1986-07-30 |
JPS61502762A (ja) | 1986-11-27 |
EP0188419B1 (de) | 1989-01-11 |
ATE39942T1 (de) | 1989-01-15 |
WO1986000916A1 (en) | 1986-02-13 |
DE3476077D1 (en) | 1989-02-16 |
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